India, Oct. 8 -- Dolly Parton's sister, Freida Parton, is calling on fans to pray for the country music icon as she navigates ongoing health challenges.

In a heartfelt Facebook post, Freida shared an emotional update, "Last night, I was up all night praying for my sister, Dolly. Many of you know she hasn't been feeling her best lately. I truly believe in the power of prayer, and I have been lead to ask all of the world that loves her to be prayer warriors and pray with me."

She added, "She's strong, she's loved, and with all the prayers being lifted for her, I know in my heart she's going to be just fine. Godspeed, my sissy Dolly. We all love you."

Earlier this month, Dolly Parton postponed her Las Vegas residency due to undisclosed me...